Petr, I measured mine at 500 Hz a few years ago but never wrote down the number. I do remember being surprised at how much it was. I use a wider filter most of the time and only go to the narrowest when there is substantial qrm in the passband; for just the reason you mention.
73, Lenny W2BVH K2 sn 1520 On 11/4/2010 4:27 PM, Petr Ourednik wrote: > Dave, > > yes I am confirming> it is the attenuation which I am talking about... > When I am decreasing BW from 1.5k to 700Hz there is not noticeable att > (which means it's aprox. less then 3dB) but by going to 400Hz or even to > 200Hz I hear big att which can be like You said 8dB or so. > > Anybody else has similar experiences pls? > > 73 - Petr, OK1RP > > On Thu, 04 Nov 2010 13:12:46 -0500, "dave"<[email protected]> said: >> I dunno about the loss you are seeing but I've measured about 8 dB of >> loss in my K2 at 200 Hz vs 1 kHz BW. That does strike me a quite a bit >> of loss. I just don't use the narrow filters often. I know of at least >> one other K2 that has similar loss. Anyone else? >> >> >> 73 de dave >> ab9ca/4 >> >> >> >> >> >> On 11/4/10 11:48 AM, ok1rp wrote: >>> Hi, >>> >>> I would like to ask for help. My K2 #4800 works fine but I realized the >>> narrower filters have attenuation. I pre-set FL1>200Hz, FL2>400Hz and >>> FL3>700Hz but with FL1 I recognised too much attenuation which degrading the >>> reception of weaks sigs. Is there something which I am doing wrong please? >>> >>> 73 - Petr, OK1RP > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
